Detections
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Echo: libpng1.6: security update to 1.6.39-2

medium Tenable Self-Hosted Container Security Plugin ID 460046

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - A heap overflow flaw was found in libpngs' pngimage.c program. This flaw allows an attacker with local
 network access to pass a specially crafted PNG file to the pngimage utility, causing an application to
 crash, leading to a denial of service. (CVE-2021-4214)

Solution

Update the libpng1.6 library and its related packages to version 1.6.39-2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2021-4214

Plugin Details

Severity: Medium

ID: 460046

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.8

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2021-4214

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/15/2025

Vulnerability Publication Date: 8/24/2022

Reference Information

CVE: CVE-2021-4214